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Anyone know the time-complexity of ECMAScript5's Object.keys() in common implementations? Is it O(n) for n ... or some real world benchmarking. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Recursive/deep extend/assign in Underscore.js?

Is there any way to get Underscore.js extend function: Copy all of the properties in the source objects over to the ... 'method': 'baz' } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to Regex search/replace only first occurrence in a string in .NET?

It seems the .NET Regex.Replace method automatically replaces all matching occurrences. I could provide a ... the first replacement? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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objective c - How to get the reference count of an NSObject?

Is there a way to fetch the current reference count for an NSObject (i.e. NSString)? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python - This application does not exist (app_id=xxx)

I was unable to upload to an AppEngine as appcfg was telling me : This application does not exist (app_id=u' ... on a newly created AppEngine. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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jquery - A cleaner way to select by multiple possible attribute values?

Is there a possibility in jQuery to select by multiple possible attribute values without having to use a comma separated ... |value="2"], etc See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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WPF window style not being applied

I have a ResourceDictionary that contains Style definitions for controls used within my application. All of the styles are ... I'm doing wrong? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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asp.net mvc - Use Entity framework I want to include only first children objects and not child of child(sub of sub)

Useing Entity framework I want to include an only the first level of children objects and not the children of ... . Could anyone help please? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Unresolved externals in C++ when using vectors and find

I have tried this code in a totally separate project, and it works fine (the only difference being that the project ... and not this one... See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Android DatePickerDialog: Set min and max date for selection

I know there are quite a lot of question for this but none of the solutions are working for me, so ... answers but without any success. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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javascript - Change HTML tag type

I have a question, can I replace one HTML tag with another? But I don't want to make the content blank. From: ... "text">content</div> Any idea? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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python RuntimeError: dictionary changed size during iteration

I have obj like this {hello: 'world', "foo.0.bar": v1, "foo.0.name": v2, "foo.1.bar ... : RuntimeError: dictionary changed size during iteration See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Converting long string of binary to hex c#

I'm looking for a way to convert a long string of binary to a hex string. the binary string looks ... string of binary into hex? Thanks See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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rust - cannot borrow `self.x` as immutable because `*self` is also borrowed as mutable

First, let the code speak: #[derive(Debug)] struct Bar; #[derive(Debug)] struct Qux { baz: bool } # ... the ownership/borrowing system in Rust. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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string - Ruby 1.9 Array.to_s behaves differently?

i wrote a quick little application that takes a base file of code with some keywords, a file of replacements for ... *i'm inexperienced in Ruby See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Accuracy of TextRenderer.MeasureText results

Calling TextRenderer.MeasureText as follows: TextRenderer.MeasureText(myControl.Text, myControl.Font); and comparing the ... or format flags? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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java - Getting Jsoup to support dynamically generated html by JavaScript

right now I'm working on a webcrawler. This one should parse some specific sites and give me an output into ... in my browser. Sincerly, Ogofo See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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How to find mean of grouped Vector columns in Spark SQL?

I have created a RelationalGroupedDataset by calling instances.groupBy(instances.col("property_name")): val x = ... each group? Thanks! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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apache spark - Efficient pyspark join

I've read a lot about how to do efficient joins in pyspark. The ways to achieve efficient joins I've found are ... but I still can't see code. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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email - php mail special characters utf8

I have the following script: <?php $subject = "Testmail - Special Characters"; $msg = "Hi there, this isn't ... you ever got this working? THX! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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Any performance issues forcing eager evaluation using count in spark?

Commonly I see Dataset.count throughout codebases in 3 scenarios: logging log.info("this ds has ${dataset.count} ... in any of those scenarios? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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process - Simple Python Multiprocessing function in Spyder doesn't output results

I have this very simple function right here in which I'm trying to run and test on, however, it doesn't output ... Worker: 2 Worker: 3 Worker: 4 See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - ef4 cause Circular reference in web service

I have a Reason object: public class Reason { public virtual long Id { get; set; } public virtual string Name ... can I solve this exception?.. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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php - How to decode a JSON String

everybody! Could I ask you to help me to decode this JSON code: $json = '{"inbox":[{"from":"55512351","date":" ... 2: ... Thank you in advance! See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - How to make my split work only on one real line and be capable to skip quoted parts of string?

So we have a simple split: #include <iostream> #include <string> #include <vector> #include <algorithm> #include < ... how to do such thing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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ios - Firebase with Swift 3 counting the number of children

I have an array of strings and I am trying to populate it through firebase. It is a chat application and ... to i populate that array count? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c++ - OpenCV: process every frame

I want to write a cross-platform application using OpenCV for video capture. In all the examples, i've found frames ... : how can i do this? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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modeling - UML diagram for dependency between systems

Which UML diagram is the best for showing dependency between our IT system and other external IT systems? For example ... . What do you think? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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